Ruler for use by draftsmen and others in drawing



Sept. 13, 1932.

n. w. B. KURTZ, JR RULER FOR USE BY DRAFTSMEN AND OTHERS' IN DRAWING Filed April 17. 1928 Syvum/vbo@ `DaJzzfeZ W B. Kurg/H Patented Sept. 13, 1932 PATENT oFFIcE DANIEL W. B. KURTZ, JR.,

OF COLUMBIA, MISSOURI RULEIB FOR USE BY DRAFTSMEN ANI!) OTHERS IN DRAWING Application led April 17,

This invention relates to rulers and more particularly to a drafting ruler.

The object of the invention is to provide an improved ruler having means for drafting a plurality of spaced dash, or dot and dash lines and further adapted to emphasize the transverse marginal indicia of the ruler.

The invention consists in the no vel construction, arrangement and combination of parts hereinafter more particularly described and claimed. E

One sheet of drawings accompanies this specification as part thereof in which like reference characters indicate similar parts throughout.

Figure l is a plan view of a ruler embodying the present invention.

Figure 2l is a transverse cross section taken i on line 2 2 of Figure 1.

Figure 3 is a fragmentary enlarged perspective of one end of the ruler.

Referring to the drawing the improved ruler comprises a main body part 1 provided on one edge with a straight metallic strip 2 for drawing straight lines and also provided with the usual transverse measuring indicia 3, here 1928. Serial No. 270,611. t

An improved ruler having one edge provided with uniform notches and having transverse unit indicia lines and having a plurality of longitudinally aligned holes of rectangular .shape each of unit length and arranged to extend between alternate pairs of indicia lines, said holes being uniformly spaced apart and spaced from said notches and positioned in predetermined relationship to the said notches whereby the units are emphasized and one to three arallel broken lines vmay be drafted as desired.

In testimony whereof he axes his signature.

DANIEL w. B. KURTZ, Ja

illustrated as representin inches, half inches,

quarter inches and eig t inches, with suitable numerals9 to identify certain ma] or indicia lines. n

On the opposite edge of the body 1 is a metallic strip 4 having its'outer edge provided with a plurality of uniform notches 5. A

,groove 6 extends longitudinall of the strip 4 connecting the inner points o these notches 5 for the purpose of guiding a pencil point from one notch to another.

Adjacent the body part 1 the strip 4 is pro- Y vided with a holes 7 ship tol plurality of spaced rectangular arranged in predetermined relationthe transverse indicia 3 and the notches 5. These rectangular holes 7, it will be observed, provide four points each spaced with respect to both the notchesand the indicla, thus providing a choice of four positions withrespect to each hole forpplacing a dot and two means in connection with each hole for drawing a short line.l Preferably the hole 7 will be connected by a longitudinally extending groove 8 which functions similarly 

